Anti‐Interference and Low Exposure Technology of the Satellite Positioning User

The anti‐interference principle of the satellite navigation receiver is to improve navigation satellite signal strength, suppress interference signal strength, or both. Narrow‐band interference can be suppressed through the frequency domain and time domain filtering technology. The self‐adaptive spatial filtering antenna is generally divided into two categories: the first is to improve antenna augmentation of the receiving signal and to use a low side lobe to align with interference signal to achieve the improvement of signal to interference plus noise ratio (SINR). However, low exposure means that the beam transmitted by the user is narrowed and aligns with the receiving satellite. As the transmission beam of the user is narrower, EIRP is controllable so that the demand of MCC multi‐user receiving processing can be met. The probability of being detected by a hostile force is reduced.